Explosive-motor.



No. 879,763. PATENTED P133118 0. R. GERGLER. BXPLOSIVE MOTOR.APPLICATION TILED MAY 28, 1907.

ATTORNEYS WITNESSES cooled, four-cycle explosive motors intended 'tobeused for the propulsion-oi motor cycles ice. s'veges.

1" '0 all whom it may concern;

Be it known that I, Trim; it. Gene-Len, c subject of the German Em eror,and e resi dent of the city of New ork, borough of Manhattan, in thecounty and State of New York, have invented s new and useful Improvementin Explosive Motors, of which she following is it full, clear, and exactde 'scri )tion. k

i e invention relates particularly to airof type having admission andexhaust valves situated at the top of the cylinder, end wherein thecylinder is furthermore providcd with one or more exhcust ports, sosituated that the piston u on reaching the lowest point of the stroke 22lows the interior oi. the cylinder come in communication with theatmosphere.

The purpose 0:? the invention is to provide 'the cylinder with meanswhereby to open or close said exhaust ports at will and as the situationmsy require.

The invention consists in the novel construction and combination of theseveral parts, will be hereinafter fully set forth flond pointed out inthe claims.

Reference 15 to be had to the accompanymg drawings lormmg a part oi thisspecification, in which similar characters ofrelorence indicatecorresponding ports in vell the Fi,g ;u1\s'1 is a vertical sectionthrough the motor, and the improved vclvc applied to the exhaust portsin the cylinder; 2 is a sectional plan view of the improved valve drawnupon an enlarged scale; and Fig. 3 is s. vertical section through thevalve.

It is a, well known fact that the weight of a motor for e motor cycleisnccessarily limited, lend consequently the power. a rule when climbingsteep, or more important still, long hills with the present motors theyslow down and sometimes stop. fihilc climbing a hill the stress on thepower is the greater,

\ the combustion of fuel reaches its maximum,

the cooling becomes defective owing to the low s eed of the cycle, thecylinder becomes 'oversated, pro-ignition follows, and the m0- tor worksbadly, or as stated, stops. TA simple wily toovercome these troubleswould be to allow as much of the burned gases as possible to escape assoon as their usefulness has ceased; that is, when. the piston hasarrived at the lowest point on the explosive stroke,

il-ipscificntion of Letters Patent. Application filed Hey 23- 1907.ilariul No. 376.048.

Fatented Feb. 18, 1908.

conse uently the time durin which the burne gases remain in the cy inderwould be greatly reduced, the cylinder would remain "cooled, thepressure that has to be overcome by the piston during its upward strokeWhile clearing the cylinder would be reduced in proportion, and themotorwould thereby gain in power and in speed. There are, however,inconveniences connected with such nconstruction which it is the'purposeof my invention to overcome. To that end I have constructed a motor thatwill run' ihe some as other motors upon a level surface where all of itspower is not required, and at the some time be able to produce thegreatest power possible at any moment, or when climbing a hill orpassing a vehicle, and with out anvinconveniencc to the rider or loss oftime.

In the form of the motor illustrated in Fig. LA" represents the cylinderand A the piston operating therein, the said piston bemg shown asprovided with a rod operated from cranks 11. the cylinder A, anadmission va ve 12 is l0- catcd, and below the admission valve 12 anexhaust valve 13 is suitably placed over the opening to the exhaust tube13 that leads to the muffler. The exhaust valve 13 is shown as providedwith a rod 14 having a. head 15 at its lower end, which engages with a.cam 16 connected with one of the reducing gears B. The cylinder A isrovidcd, ith the customary spark plug 1'7, ut the cylinder'A is providedwlth a series of exhaust ports 18, which exhaust ports are locatedslightly above the upper face of the piston A when at thelowest point inits explosive stroke: These ports 18 may be multiple, or a single suchport may be provided, preferably, however, onurnber of ports are em--ployed, as is illustrated. My improvcl'nent consists in the absolutecontrol of these exhaust ports 18 for the pur oses that have beenstated. To that end further provide a rocking valve C which is oi a ringtype, and is mounted for free movement at the exterior of the cylinderover the ports 18 therein. {is is shown in Figs. 2 and 3, particularlyin Fig. 3, the valve 0 consists of a sleeve 19 and jafhood 20'tlmtextends out from the upper marginal portion of the sleeve and thendownward beyond its lower edge, and is spaced from the said sleeve so asto provide an annular chamber 20 The sleeve 19 is usually integral withthe hood 20, although E jection 23 from the exterior portionof the avalve is connected in any suitable or aptially U-shaped ring, the innerface of the the two arts may be made separate and connected in anyapproved manner, and the I said sleeve 19 is provided with a series ofports 21 corresponding in number and arrangement with the exhaust ports18' in thecylinder A, so that by turning the valve 0- the exhaust orts18.1nay be closedabsolutely or partially, or the said ports may be fullyopened for the free esca e of the dead gases contained in thesaid cyinder. v

The movement of the valve C is under the complete control of the rider,since a proproved manner to be operated from a point adjacent thedrivers seat. The valve C may be held in osition on the cylinder A inmany ways. n the drawings, in Fig. 1, a collar 22 is illustrated as beinsecured to the exterior of the cylinder, wit which collar the lower edgeof the sleeve 19 engages, having free movement thereon. The valve Cconstructed in this manner had two functions to perform, namely, it isso constructed that it can be moved by means of a lever in such a way asto thoroughly control the orts 18 at the Wlll of the rider, and it is'urther so constructed by reason of the hood 20 that the burned gases,oil andfiames are carried to a oint or place where' they-can be safelydisc iarged into the air, without any back-pressure or possibility oftheir causing the rider inconvenience.

Having thus described my invention, I claim as new and desire to secureby Letters Patent,

1. In explosive motors, a cylinder and its piston, said cylinder beingprovided "with an exhaust port above the piston when the latter is atthe limit of its explosive stroke, and i a manually operated "alve forclosing said exhaust, saidvalve comprising a substanring being providedwith openings adapted to register with the exhaust port of the cylinider.

2. In an explosive motor, a cylinder and its piston said cylinder beingprovided with an auxiliary port above the piston when it is at thelimitof its explosive stroke, and a manually operated valve for theauxiliary exhaust, which valve is independent in its ac- 7 tion of themain exhaust valve of the motor.

3. In an explosive motor, the et-nnbination with a cylinder providedwith a nfain and an auxiliary exhaust port, of a mechanically operatedvalve for the main exhaust, and a 5. In an explosive motor, acylinderand its piston, said cylinder being provided with an exhaust port abovethe piston when the latter is at the limit of its explosive stroke, anda manually operated valve for said port,

and an exteriorly located protective hgod' for the said manuallyoperated valve.

6. In an explosive motor, the combination with a cylinder and itsplston, the cylinder being provided with a. main and with auxiliaryexhaust ports, the auxiliary exhaust ports being located at a pointabove the piston when at the limit of its explosive stroke, of "amechanically operated valve for the main exhaust, and a manuallyoperated valve fort-he auxiliarv exhaust ports, said manuallyoperatedfvalve including a sleeve mounted to turn upon the cylinder andpro- .vided with a series of openings corresponding in position andnumber to the and numberof the auxiliary ports.

7. In an explosive motor, the combination with a cylinder and itspiston, the cvlinder being provided with a main and wit auxiliaryexhaust ports, the auxiliary exhaust ports being located at a pointabove the piston when at the limit of its ex losive posit on stroke, ofa mechanically operated va ve forthe main' exhaust, and a manuallyoperated valve for the auxiliar exhaust ports, said manually operatedvalve includinga sleeve mounted to turn upon the cylinder and pro videdwith a series of openings corresponding in position and number'to theposition and number of the auxiliary ports, and a hood extending fromthe upper portion of the sleeve outward and thence downward to a pointbelow the lower edge of the sleeve whereby a chamber is formedbetweenthe outer face of the sleeve and the inner side face of the hood.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

CARL R. GERGLER.

Witnesses:

Fn an. J. ACRER, Joux l. DAVIS.

